/usr/share/fonts-roboto-fontface/fonts/roboto/Roboto-Black.woff is in fonts-roboto-fontface 0.5.0-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/fonts-roboto-fontface/fonts/roboto/../../../fonts/woff/roboto-fontface/roboto/Roboto-Black.woff